/*
 * Copyright 2017 Huawei Technologies Co., Ltd
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *    http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package io.servicecomb.provider.pojo.reference;

import org.springframework.beans.factory.support.BeanDefinitionBuilder;
import org.springframework.beans.factory.xml.AbstractSingleBeanDefinitionParser;
import org.springframework.beans.factory.xml.ParserContext;
import org.springframework.util.StringUtils;
import org.w3c.dom.Element;

import io.servicecomb.provider.pojo.PojoConst;
import io.servicecomb.swagger.generator.core.utils.ClassUtils;

public class ReferenceDefParser extends AbstractSingleBeanDefinitionParser {
    @Override
    protected Class<?> getBeanClass(Element element) {
        return PojoReferenceMeta.class;
    }

    @Override
    protected void doParse(Element element, ParserContext parserContext, BeanDefinitionBuilder builder) {
        builder.addPropertyValue(PojoConst.FIELD_MICROSERVICE_NAME,
                element.getAttribute(PojoConst.MICROSERVICE_NAME));

        String schemaId = element.getAttribute(PojoConst.SCHEMA_ID);
        String intf = element.getAttribute(PojoConst.INTERFACE);

        if (StringUtils.isEmpty(intf) && !StringUtils.isEmpty(schemaId)) {
            //  尝试将schemaId当作接口名使用
            Class<?> consumerIntf = ClassUtils.getClassByName(null, schemaId);
            if (consumerIntf != null) {
                intf = schemaId;
            }
        }

        builder.addPropertyValue(PojoConst.FIELD_SCHEMA_ID, schemaId);
        builder.addPropertyValue(PojoConst.FIELD_INTERFACE, intf);

        if (StringUtils.isEmpty(schemaId) && StringUtils.isEmpty(intf)) {
            throw new Error("schema-id and interface can not both be empty.");
        }
    }
}
